Now, Mayo is back with more on the BofA board, and what should be done on September 22.

Advocating for a "no" vote in a recent note, Mayo wrote:

A "yes" vote on 22 September to combine the CEO/chair roles would consolidate board power, but increase the industry's reputational risk by taking BofA's existing poor oversight and making it worse in a hurried vote at a time of increased political sensitivities, in our view. In short, it could have the effect of putting a larger regulatory target on the industry's back.

He said the board has shown poor oversight, and listed 10 specific concerns with the board. Business Insider has reached out to Bank of America for comment.

Here are Mayo's ten gripes:

The board's unilateral consolidation of chairman and CEO roles, without a shareholder vote at the time.

The fact that the lead director at the time called the move "thorough and thoughtful."

Pay raises for the board of directors that came only six weeks after the May 2015 annual meeting.

An intentional lack of transparency when it comes to board decisions, including the October 2014 vote to combine CEO and chairman roles.

The lead director's lack of bank regulatory experience, visibility, and balance.

There are no timeframes for key financial targets.

There is no scorecard for compensation.

Inconsistent financial metrics in the CEO letter and presentations.

The fact that the bank has seen four CFOs, four chief risk officers, and four heads of wealth management in just eight years.

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